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masha68 [24]
2 years ago
12

Which of these is a complex number?

Mathematics
1 answer:
Setler79 [48]2 years ago
8 0
The answer is D.

Explanation: The square root of a negative number is imaginary which is another name for a complex number
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Which equation represents a line that passes through (-2, 4) and has a slope of 2/5
Ulleksa [173]

Answer:

The equation of line is 5(y-4) = 2( x+2)

2 x-5 y+24=0

Step-by-step explanation:

<u>Step 1:-</u>

Given slope is m = \frac{2}{5} and passes through (-2,4)

y-y_{1}= m(x-x_{1} )

y-4 = \frac{2}{5}(x-(-2))

5(y-4) = 2( x+2)

2 x-5 y+24=0

8 0
3 years ago
Please help im so confused??
Vlad1618 [11]
V = PI x r^2 x h/3

11^2 = 121
121 * 84 = 10164

 answer is 10164PI units^3

answer is B

3 0
3 years ago
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Which of the following congruency statements is correct?
xxMikexx [17]
I don’t think any of them are correct .. but I may be wrong
3 0
3 years ago
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Find the area of the circle.
juin [17]

Answer:

See Explanation Below

Step-by-step explanation:

Your question isn't clear; However, I'll solve in two ways

1. Diameter = 14 cm

2. Radius = 14 cm

<em></em>

<em>When Diameter = 14 cm</em>

Given

Area = \pi r^2

Diameter = 14cm

Required

Calculate the area of the circle

First, the radius has to be solved;

Radius = \frac{1}{2} Diameter

Radius = \frac{1}{2} * 14cm

Radius = 7cm

Using the given formula;

The area is as follows

Area = \pi r^2

Area = 3.14 * 7^2

Area = 3.14 * 49

Area = 153.86cm^2

<em>When Radius = 14 cm</em>

Given

Area = \pi r^2

Radius = 14cm

Required

Calculate the area of the circle

Using the given formula;

The area is as follows

Area = \pi r^2

Area = 3.14 * 14^2

Area = 3.14 * 196

Area = 615.44cm^2

7 0
3 years ago
CAN SOMEONE PLEASE HELP ME ASAP PLEASEEEE!!!​
Rom4ik [11]

Answer:

11.4

Step-by-step explanation:

So we know that Triangle ACB is similar to Triangle EFD.

This means that their sides are proportional to each other.

We want to find x or side AB. To do so, we can set up a proportion.

The proportional side to AB is ED. Let's also use BC since we know its value. The proportional side to BC is DF. Thus:

\frac{AB}{ED}=\frac{BC}{DF}

Substitute x for AB, 3.8 for Ed, 15 for BC, and 5 for DF. Thus:

\frac{x}{3.8}=\frac{15}{5}

Reduce the right:

\frac{x}{3.8}=\frac{3}{1}

Cross multiply:

x=11.4

So, the value of x is 11.4

And we're done!

7 0
3 years ago
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